No one is working on it because there are at least *two* bugs, at least one in Acrobat and at least one in Sibelius. When I contacted them, they each answered with some combination of "Not our problem -- get the other company to fix it" and, infuriatingly, "We have no responsibility for training users to use our software." That last reaction indicates a serious disdain for their customers.
The Sibelius bug is that they insert multiple copies of fonts into their PDFs. This can be fixed up by finding a PDF reader that can read the PDF and also allows a "Save as PDF" while reading a PDF. I think Apple's "Preview" can do that, but if whatever tool you find will rewrite the PDF without the multiple copies of the fonts, then the copy of the PDF has been "healed".
The Adobe bug is that Acrobat is too damned strict. Since other tools can read the mildly-non-standard Sibelius PDFs, Acrobat has no excuse for not reading them too. If an Adobe tool detects a non-standard PDF, it should show a warning and then try its best to understand what's there. Instead, Acrobat produces a printout of the music PDF produced by Sibelius that lacks all the noteheads -- completely worthless.
And instead of responding to the report of the error with a testing plan and a request for example PDFs that show the error, Adobe decided to throw abuse in the face of the customer. Sad.
No one is working on it because there are at least *two* bugs, at least one in Acrobat and at least one in Sibelius. When I contacted them, they each answered with some combination of "Not our problem -- get the other company to fix it" and, infuriatingly, "We have no responsibility for training users to use our software." That last reaction indicates a serious disdain for their customers.
The Sibelius bug is that they insert multiple copies of fonts into their PDFs. This can be fixed up by finding a PDF reader that can read the PDF and also allows a "Save as PDF" while reading a PDF. I think Apple's "Preview" can do that, but if whatever tool you find will rewrite the PDF without the multiple copies of the fonts, then the copy of the PDF has been "healed".
The Adobe bug is that Acrobat is too damned strict. Since other tools can read the mildly-non-standard Sibelius PDFs, Acrobat has no excuse for not reading them too. If an Adobe tool detects a non-standard PDF, it should show a warning and then try its best to understand what's there. Instead, Acrobat produces a printout of the music PDF produced by Sibelius that lacks all the noteheads -- completely worthless.
And instead of responding to the report of the error with a testing plan and a request for example PDFs that show the error, Adobe decided to throw abuse in the face of the customer. Sad.